Iguana Species · Grand Cayman Island
Grand Cayman Blue Iguana
Powder-blue rock iguana saved by captive breeding — never a pet species.
By the WARN Research & Conservation TeamChecked against IUCN Red List & CITES sourcesLast updated
In brief
The Grand Cayman blue iguana (Cyclura lewisi) is the powder-blue rock iguana saved from near extinction — down to fewer than 15 wild individuals before intensive breeding rebuilt numbers. Its defining trait is managed conservation stock only: never a pet, always a recovery programme success story.
Grand Cayman Blue Iguana: At a Glance
| Origin | Grand Cayman Island |
|---|---|
| Size | Large (5–9 kg) |
| Typical weight | 5–9 kg (11–20 lb); terrestrial blue adult among largest Cyclura |
| Lifespan | 15–20 years (green iguana in captivity); wild species vary |
| Scales & colour | Powder blue to grey-blue scales in adults; juveniles darker banded. Rough Cyclura texture — colour unique among rock iguanas. |
| Temperament | Terrestrial, bold, recovered from near extinction |
| Conservation note | Wild reintroduction sites and accredited breeding facilities on Grand Cayman — not domestic collectors. Every individual genetically valuable to species recovery. |
History & Origins
Grand Cayman blue iguanas declined from habitat loss, cats, dogs and cars to critical levels by early 2000s. Blue Iguana Recovery Programme rebuilt wild population through captive breeding and reintroduction. Private ownership would threaten genetic management — species remains Endangered with managed wild and captive populations.
Grand Cayman Blue Iguana Fun Facts
- Recovery from fewer than 15 wild individuals — among greatest reptile conservation wins.
- Powder blue colour develops in mature adults on Grand Cayman.
- Road mortality remains leading wild threat after recovery.
- Each captive animal tracked genetically for reintroduction programme.
Grand Cayman Blue Iguana Common Health Issues
Conditions seen more often in this breed, and how owners and vets help manage them. This is general guidance, not veterinary advice — always speak to your vet.
Road mortality (wild)
Cars strike iguanas on Grand Cayman roads near habitat.
Care: Support road signage and speed reduction in iguana zones.
Introduced predators (wild)
Cats and dogs kill iguanas and eggs despite recovery.
Care: Fund predator management on Grand Cayman.
Cannot be kept responsibly in homes
Conservation management prohibits pet trade.
Care: Support in-situ programme rather than seeking ownership.
Most iguanas are not beginner pets
Green iguanas grow to two metres and live twenty years — most owners are unprepared. Released pets become invasive. Consider adoption only if you can meet specialist reptile welfare standards.
